[PROTON-2709] Settle delivered messages in the C sender example

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: proton-c-0.39.0
• Component/s: proton-c
• Assignee: Andrew Stitcher
• Reporter: Andrew Stitcher
• Created: 11/Apr/23 18:11
• Updated: 07/Jun/23 12:18
• Resolved: 11/Apr/23 21:22

Description

Although it's not needed in the example because the link is fairly short lived and so doesn't create excessive memory use, the sender should settle the delivery when the message is accepted so as to free all memory resources associated with it. This is necessary for a long lived sender and so the example should show this.